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14.04 amd64, with LUKS encryption of /boot/ as well LVM VGs with key-
files.

The system is configured with GRUB_ENABLE_CRYPTODISK and the /boot/
file-system partition LUKS encrpyted.

After boot it has:

/dev/sda5 > /dev/mapper/LUKS_VG > /dev/VG/
/dev/mapper/VG-rootfs  > /
/dev/mapper/VG-usr_local > /usr/local/
/dev/sda3 > /dev/mapper/LUKS_boot > /boot/

A LUKS key-file is read from a location inside the /usr/local/ file-
system and used to unlock /dev/sda3 for Linux. /dev/sda3 was separately
unlocked by GRUB at boot-time.


After a suspend/resume cycle I noticed that 'mount' reports:

$ mount | grep LUKS
/dev/mapper/LUKS_boot_unformatted on /boot type ext3 (rw)

$ grep LUKS /proc/mounts
/dev/mapper/LUKS_boot_unformatted /boot ext3 rw,relatime,data=ordered 0 0

$ sudo dmsetup info LUKS_boot_unformatted
Device does not exist.
Command failed

$ sudo dmsetup info LUKS_boot
Name:              LUKS_boot
State:             ACTIVE
Read Ahead:        256
Tables present:    LIVE
Open count:        1
Event number:      1
Major, minor:      252, 27
Number of targets: 1
UUID: CRYPT-LUKS1-160fa39a12054ad5be449c2c943fb113-LUKS_boot_unformatted

This causes grub-probe to fail during package upgrades, which in turn
breaks Apt:

var/log/apt/term.log:2598:/usr/sbin/grub-probe: error: failed to get
canonical path of `/dev/mapper/LUKS_boot_unformatted'.

It seems as is mountall is triggered and mounts the temporary name
before "/lib/cryptsetup/cryptdisks.functions" finalize_device() renames
to the permanent name. It isn't clear if this script is called upon
resume as well as at boot-time but it is the only reference I can find
to the temporary "_unformatted" device name usage.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Resume mounts /dev/mapper/${dst}_unformatted, breaks GRUB and Apt
https://bugs.launchpad.net/bugs/1308254
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